<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">

    </head>
    <body>

        <div >
            <p id="myDiv"></p>
            <p id="demo"></p>
        </div>
        <button type="button" onclick="loadXMLDoc()">修改内容</button>

        <script>

            function loadXMLDoc() {

                var xmlhttp = new XMLHttpRequest();

                xmlhttp.open("GET", "https://www.atu360.cn/api/phone/index", true);

                xmlhttp.send();

                xmlhttp.onreadystatechange = function () {
                    console.log(xmlhttp.readyState);
                    console.log(xmlhttp.status);
                    if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {

                        var data = JSON.parse(xmlhttp.responseText)

                        document
                            .getElementById("myDiv")
                            .innerHTML = data;
                        console.log(data.Ad.length);

                        
                    }
                }

            }
        </script>
    </body>
</html>